CVE-2021-38578

Description

Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize.

Categories

7.4
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.07%
Vendor Advisory tianocore.org
Affected: TianoCore EDK II
Published at:
Updated at:

References

Link Tags
https://bugzilla.tianocore.org/show_bug.cgi?id=3387 vendor advisory issue tracking
https://www.insyde.com/security-pledge/SA-2023024 third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-38578?
CVE-2021-38578 has been scored as a high severity vulnerability.
How to fix CVE-2021-38578?
To fix CVE-2021-38578, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-38578 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-38578 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-38578?
CVE-2021-38578 affects TianoCore EDK II.
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